/ Dictionary / Index P phytosterol: Meaning and Definition of Find definitions for: phy•tos•te•rol Pronunciation: (fī-tos'tu-rôl", -rol"), [key] — n. any of various sterols obtained from plants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phytosociology phytosuccivorous Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language